Resizing in CamBam was a bit of a pain but that's been fixed in the latest beta release - what version are you using?

If you want to post your CamBam file here I'll have a look at it.

The CamBam site has some tutorial stuff...

http://www.cambam.info/doc/

http://www.cambam.info/vids/Introduction/

There are also some very helpful people on the forum...

http://www.cambam.co.uk/forum/index.php

You might find it useful to go through the process of building this with CamBam since it looks like SolidCam uses the same principles (pockets / profiles etc) but I think CamBam is one of the easier CAM programs to use. I know it took me a while to get my head round SolidWorks so I suspect the combination of SolidWorks and SolidCam will be quite daunting.